Add build flag for libbinder client cache

Bug: 333854840
Test: N/A
Flag: RELEASE_LIBBINDER_CLIENT_CACHE
Change-Id: Ia07ef7926a1d80b3435ffcf7578ae82f9e3f68f2
diff --git a/libs/binder/Android.bp b/libs/binder/Android.bp
index cdc7166..28215d3 100644
--- a/libs/binder/Android.bp
+++ b/libs/binder/Android.bp
@@ -450,8 +450,31 @@
     ],
 }
 
+soong_config_module_type {
+    name: "libbinder_client_cache_config",
+    module_type: "cc_defaults",
+    config_namespace: "libbinder",
+    bool_variables: ["release_libbinder_client_cache"],
+    properties: [
+        "cflags",
+    ],
+}
+
+libbinder_client_cache_config {
+    name: "libbinder_client_cache_flag",
+    soong_config_variables: {
+        release_libbinder_client_cache: {
+            cflags: ["-DLIBBINDER_CLIENT_CACHE"],
+            conditions_default: {
+                cflags: ["-DNO_LIBBINDER_CLIENT_CACHE"],
+            },
+        },
+    },
+}
+
 cc_defaults {
     name: "libbinder_kernel_defaults",
+    defaults: ["libbinder_client_cache_flag"],
     srcs: [
         "BufferedTextOutput.cpp",
         "BackendUnifiedServiceManager.cpp",